Your example is why I always carried a .45 on duty and I should've known the answer. Just go to a bowling alley to see a prime example of it. I bowled league from high school until I was 21. My 16lb ball at 8 mph would knock down more pins than the 8lb thrown at 14 mph.Back when I had a 9mm a LONG TIME AGO I always shot the 147's never had a lick of trouble knocking steel over. Think of it this way, would you rather be hit by a BB at 1000fps or a bowling ball at 300fps? Later,
OMG this is why BoomerShooter can't have nice things.Nothing is going to knock down the steel at Steel Challenge, they're ringing targets not falling.
I've always wondered about the effect of different bullet weights at the same PF on steel. PF measures momentum, but since the collision between a bullet and falling steel is partially elastic there should be SOME benefit to using higher-energy bullets. However I've shot plate racks with 115gr, 124gr, and 147gr bullets and the only time they haven't gone down quickly was when I was running minimum loads that were so light that they didn't lock the slide back on my P6.Mitch Gibson said:On the subject of bullet weight, I did move to a 124gr projectiles in a ploy to guaranty knocking down poppers. It was a bad plan with no foundation other than a lazy half-assed guess. 115gr is just fine, and has more energy.